Land of men in song (7)
I believe the answer is:
armenia
'land' is the definition.
(I know that Armenia is a Asian country)
'men in song' is the wordplay.
'in' is an insertion indicator.
'song' becomes 'aria' (piece of music in an opera).
'men' placed into 'aria' is 'ARMENIA'.
'of' is the link.
(Other definitions for armenia that I've seen before include "Landlocked country south of Georgia" , "Caucasian republic" , "Republic, formerly part of the Soviet Union" , "Mountainous republic bordering Turkey" , "Republic east of Black Sea bordering Turkey, capital Yerevan" .)